Active standard | Published: 01/06/2008

API TR 938-B

Use of 9CR-1Mo-V (Grade 91) Steel in the Oil Refining Industry, First Edition

Available languages: English

Available design: electronic (protected pdf), Print design

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Detail information

Designation: API TR 938-B

Publication date: 01/06/2008

Pages: 40

Country: American technical standard

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Anotation

This report provides guidelines on the proper specifications for base metal and welding consumables and successful fabrication, including welding and heat treatment requirements for use of 9Cr-1Mo-V alloy steel in the oil refinery services. This includes guidelines for preheat, postweld heat treatment, procedure qualification, and mechanical and nondestructive testing.

This document also defines hardness limits for the base material and welds in order to avoid cracking failures due to wet sulfide stress corrosion cracking or due to other possible failure mechanisms. A discussion of both proper and improper refinery service applications for these steels is also provided. See more

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